//
//  UIButton+EnlargeTouchArea.m
//  YOYOLive
//
//  Created by wanggenqiang on 16/10/10.
//  Copyright © 2016年 wanggenqiang. All rights reserved.
//

#import "UIButton+EnlargeTouchArea.h"
#import <objc/runtime.h>
@implementation UIButton (EnlargeTouchArea)

static char topNameKey;
static char rightNameKey;
static char bottomNameKey;
static char leftNameKey;

- (void) setEnlargeEdgeWithTop:(CGFloat) top right:(CGFloat) right bottom:(CGFloat) bottom left:(CGFloat) left
{
    objc_setAssociatedObject(self, &topNameKey, [NSNumber numberWithFloat:top], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:right], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &bottomNameKey, [NSNumber numberWithFloat:bottom], OBJC_ASSOCIATION_COPY_NONATOMIC);
    objc_setAssociatedObject(self, &leftNameKey, [NSNumber numberWithFloat:left], OBJC_ASSOCIATION_COPY_NONATOMIC);
}

- (CGRect) enlargedRect
{
    NSNumber* topEdge = objc_getAssociatedObject(self, &topNameKey);
    NSNumber* rightEdge = objc_getAssociatedObject(self, &rightNameKey);
    NSNumber* bottomEdge = objc_getAssociatedObject(self, &bottomNameKey);
    NSNumber* leftEdge = objc_getAssociatedObject(self, &leftNameKey);
    if (topEdge && rightEdge && bottomEdge && leftEdge)
    {
        return CGRectMake(self.bounds.origin.x - leftEdge.floatValue,
                          self.bounds.origin.y - topEdge.floatValue,
                          self.bounds.size.width + leftEdge.floatValue + rightEdge.floatValue,
                          self.bounds.size.height + topEdge.floatValue + bottomEdge.floatValue);
    }
    else
    {
        return self.bounds;
    }
}

- (UIView*) hitTest:(CGPoint) point withEvent:(UIEvent*) event
{
    CGRect rect = [self enlargedRect];
    if (CGRectEqualToRect(rect, self.bounds))
    {
        return [super hitTest:point withEvent:event];
    }
    return CGRectContainsPoint(rect, point) ? self : nil;
}

- (void)setButtonLayerCornerRadius:(NSInteger)cornerRadius BorderWidth:(NSInteger)borderWidth BorderColor:(UIColor*)borderColor {
    self.layer.masksToBounds = YES;
    self.layer.cornerRadius = cornerRadius;
    self.layer.borderWidth = borderWidth;
    self.layer.borderColor = borderColor.CGColor;
}


- (void)verticalImageAndTitle:(CGFloat)spacing {
    self.titleLabel.backgroundColor = [UIColor clearColor];
    CGSize imageSize = self.imageView.frame.size;
    CGSize titleSize = self.titleLabel.frame.size;
    CGSize textSize = [self.titleLabel.text sizeWithFont:self.titleLabel.font];
    CGSize frameSize = CGSizeMake(ceilf(textSize.width), ceilf(textSize.height));
    if (titleSize.width + 0.5 < frameSize.width) {
        titleSize.width = frameSize.width;
    }
    CGFloat totalHeight = (imageSize.height + titleSize.height + spacing);
    self.imageEdgeInsets = UIEdgeInsetsMake(- (totalHeight - imageSize.height), 0.0, 0.0, - titleSize.width);
    self.titleEdgeInsets = UIEdgeInsetsMake(0, - imageSize.width, - (totalHeight - titleSize.height), 0);
}

@end
